How is the METRO variable (from the ACS) in the IPUMS database constructed?
Does it follow something like the following:
ACS is sent out to a random people.
Based on respondent’s location, IPUMS or ACS classifies whether ot not that respondent was in a metro area (based on metropolitan and micropolitan statstical areas in PUMAs) and labels 2,3, or 4 if they are.
If the METRO variable is not constructed this way, please share any information about how it is!
Thank you in advance.